Warring-machine



2' Sheets-Sheet 1.

(No Model.)

T. C. ENTW-ISTLE.

WARPING- MACHINE.

N PETERS, Phokn-lilhagmpher. Waihlnglun. n. c.

(NoModeL) 2 Sheets-*Sheet 2.

T. 0; ENTWISTLE. WARPING MAGHINE.

No 336,477. Patented Feb. 16', 1886.

VE. in

Zmd450 UNITED STATES PATENT OFFICE.

THOMAS C. ENTWISTLE, OF MELROSE, MASSAGHUSE'ITS' WARPlNG-MACHINE.

SPECIFICATION forming part of Letters Patent No. 336,477, dated February 16, 1886.

Application died March 14, 1885. Serial No. 158,937. (No model.)

To all whom it may concern:

Be it known that I, THOMAS C. EivrwIsTLE, a citizen of the United States, residing at Melrose, in the county of Middlesex and Commonwealth of Massachusetts, have invented certain new and useful Improvements in Varping- Machines, of which the following is aspecification. My invention relates to expansion dropwires for warping and beaming machines, and resides, mainly, in the combination of the drop-wires with their dents in such manner that the two may be readily engaged together ordisengaged, as desired, as well as in the arrangement and combination of parts whereby the spaces between the drop-wire heads or brackets are prevented from filling same.

with lint or dirt.

My invention embraces also other features, which, together with those above alluded to, can best be explained and understood by reference to the accompanying drawings, in which- Figure 1 is an isometric view of a drop-wire box with brackets, drop-wires, stop-bar, drums provided with hand-wheels and straps, and the guard, some of the drop-wires being supported by warp-yarns and others resting upon the stop-bar. Fig. 2 is a vertical cross-section of said box between two adjacent dropwire brackets. Fig. 3 is a horizontal central longitudinal section of the drop-wire box between its heads. Fig. 4 is a side elevation of the drop-wire bracket detached from its drop-wire. Fig. 5 is a plan of the bottom of the same. Fig. 6 is a rear elevation of the Fig. 7 is a side elevation of the dropwire detached. Fig. 8 is a plan of the bottom of the same. Fig. 9 is a vertical cross-section of two drop-wire boxes, the vibrator-shaft, and vibrator and stop-rods, the arms which connect said shaft with the vibrating bars being in side elevation, and two carrier-ro1ls being shown in end elevation. Fig. 10 is an isometric view of a dent; Fig. 11, an isometric view of the guard detached from the drop-wire box. Fig. 12 is a horizontal central longitudinal section of the drop-wire box near one end of the same, showing also the head.

A is the drop-wire box, formed with a longitudinal slot, a, and provided with heads L, springs C O, guide-rods R, stop-rod R, and

rings R, around which the ends of the guiderods and stoprods are looped. 'I is the stop-bar, on which the drop-wires fall when the yarn breaks. M is the vibrator, consisting of the vibrating bar m, rock-shaft m, and. arms of, connecting said shaft and vibrating bar. Straps H H connect the ends of the springs O C with drums I I, and hand-wheels J J are provided, by which the drums are revolved to wind said straps upon or unwind them from said drums, thereby expanding or contracting the springs O C. All of these parts are constructed, supported, and operated substantially as described in other applications for Letters Patent now pending in my nameto wit, application Serial No. 143,545, filed September 20, 1884, and application Se rial No. 143,046, filed September 15, 1884-- and they therefore require no further description here.

In the practical use of expansion drop-wires I have found that many and serious disadvantages result from rigidly connecting together or forming in one piece the drop-wire bracket with the dent by which it is held and moved.

It not unfrequently happens that one of the expansion drop-wires breaks or becomes twisted, and it often occurs that some one or more of the wires become channeled or grooved by reason of the friction of the yarn or thread, in which event it is of course necessary to replace the defective guide-wire by a perfect one. This operation, however, when the guide'wire bracket and its dent are rigidly connected together is a difficult one, necessitating the removal of both devices from the expansion box and virtually necessitating taking the box to pieces, inasmuch as the dents are strong and held upon the stop-rod It. Again, it often happens that the drop-wires are so expanded that a number of them at each end of the box receive no yarn and are virtually out ofaction,

and under these circumstances it is desirable that they should be removed, not only to pre vent them from being exposed to dirt or dust when not actually in use, but also to get them out of the way of the vibrator. Then, however, the drop-wire brackets are positively and rigidly connected to their dents, the op-:

eration of removing them for the reason-above given is too diflicult and troublesome, and the only thing to do under the circumstances is to tie them up in some fashion, so as to be out of the way, which is an uncertain expedient at the best. With a view to removing these and other difficulties which I have practically experienced in the use of expansion drop-wires, I loosely or detachably engage or connect the drop-wire brackets with their dents, so that any one of the drop-wires can be removed from its dent and from the expansion-box without disturbing either its dent or the other drop-wire bracketsand dents with which the box is provided. 7

The drop -wire bracket which I prefer to employ is of the form shown in the accompanying drawings. It is provided with a short shank, w, which enters and loosely fits the slot a of the expansion drop-wire box A, said shank being wider than slot, in order to prevent it from turning therein. The shank is provided in its end with a slot, w, to receive the outer end of the short dent D, which is placed between the coils of the springs G O, and is retained in place and guided by the guide-rods R and stop-rod R, above named, just as the shank or stem of the bracket shown in my above-recited applications is retained and guided. On each side of the shank is a projection, 10 20 which bear or rest upon the exterior of the expansion drop-wire box on opposite sides of the slot a, the bearing-surfaces of said projections-that is to say, the faces which are contiguous to the exterior of the box-being suitably shaped to conform to the shape of the latter. The shank serves to guide and hold the drop-wire bracket in the slot, even should there be no dent, and it in conjunction with the bearing-faces w 10 on each side serve effectually to support the bracket and to take off from the dent strain that otherwise might at times come upon it, and to prevent any tendency in the bracket to cramp during its movement. In this way any difficulty which at times might arise from the loose connection between the bracket and dent is effectually guarded against, and the bracket, while maintained in a position in which it moves at all times with its dent, can readily and easily be engaged with and disengaged from the same.

I may here remark that I prefer to cut away the outer face of the projection 20 near its top, in order that the bracket may not have too large a surface in contact with the guardplate Gr, hereinafter described.

Each bracket is provided with a drop-wire, V, which may be similar to that shown in my aforesaid applications, the same being provided with the yarn-eye o of the usual form, and with a ring, 11, by which it is pivoted on a horizontal pivot, w supported in ears 10 on said bracket, and to make sure that the drop-wires and their brackets will not be lifted out of place by the tension of the yarns, I

is secured thereto by the screws 9 in front of the drop-wires. The rear of saidguard-plate is bent down over the heads 10 of the brackets W to the ears 10 but not far enough to be in absolute contact with said brackets, the distance between the guard plate and the brackets being at the nearest point -say about a thirty-second of an inchor sutficient to prevent the shank of the bracket from be ing drawn out of the slot a. The drop-wires, when raised, rest against the guard-plate G, as indicated clearly in Figs. 2 and 9, and in this position they are nearly vertical. The dents and brackets, however, when the dropwires are raised, are not upon a prolongation of the wires, but lie approximately at right angles thereto or in a horizontal plane, and the slot a in the expansion-box is upon the side and not upon the top of said box, while the guard-plate overhangs both dents and brackets and slots, thus effectually preventing lint from lodging and accumulating between the brackets. By preventing the lint from getting between the brackets and into the box between the dents, I remove a serious difficulty which I have experienced in the use of expansion drop-wires. Lint, unless prevented by some means, will accumulate rapidly between the parts named, particularly the brackets, and when it does accumulate it in terferes with, and indeed prevents the subse quent contraction of the comb.

' The guard-plate is open at each end, so as to leave an unobstructed passage for the brack: ets, and it stops at the ends a little distance short of the heads L ofthe box, so that whenever the drop-wires are expanded far enough to bring those at one or both ends out from under the guard-plate, the ones thus uncovered can be at once removed from the box. In case it be desired to remove the drop-wire bracket which is under the guard-plate, all that is necessary to do is to loosen the screws 9 until the guard-plate can be lifted sufficiently to allow the bracket to be taken out from the slot a. The ease and facility with which the drop-wire bracket can thus be removed and replaced is due to the loose and detachable connection between it and its dent.

If, as before said, the bracket were rigidly secured to the dent, it would be necessary, in order to remove a bent or broken drop-wire or bracket, to remove all the drop-wires and brackets and dents between the bent or broken drop-wires or bracket and the end of the box, and this would necessitate the cutting of all the yarn, the removal of the drop-wire box from the machine, and virtually the complete taking to pieces of the box.

The shanks of the brackets, instead of straddling the dents, may be placed in the spaces between the dents, as indicated in Fig. 12. This arrangement, although not so good. as the one described, will nevertheless allow the drop-wires and brackets to be removed and replaced readily.

It will be noted that in the device illustrated in the drawings the drop-wire brackets depend not upon the dents, but directly upon the drop-wire box for their guidance and support, the sole function ot the dents, which are separate from and unattached to the brackets, being to act merely as pusher-s or drivers to effect the movements of the brackets needed to insure the desired expansion or contraction of the comb.

It is manifest that my improvements are applicable to drop-wire boxes other than of the particular construction illustrated in the drawings.

Having described my improvements and the best way now known to me of carrying the same into practical effect, I desire it to be un derstood, in conclusion, that I do not restrict myself to the specific details herein shown and described in illustration of the same; but

What I claim as new and of my own invention is as follows:

1. The combination,with the drop-wire box, expansion-springs, and dents, of brackets provided with pivoted drop-wires and loosely or detachably engaged with said dents, so that any one of the brackets may be removed from or applied to its dent and the box without disturbing either its own dent or any other dent,

substantially as and for the purposes hereinbefore set forth.

2. The combination,with an expansion drop- Wire box, of drop'wire brackets resting upon and supported and guided in their movements by said box, drop-wires pivoted to said brackets, and bracket-operating dents separate from and unattached to the brackets, substantially as and for the purposes set forth.

3. The combination, with a slotted expansion drop-wire box, expansion-springs, and dents, of drop-wire brackets loosely or detachably engaged with said dents and provided with shanks which enter and fit the slot in the drop-wire box, substantially as and for the purposes set forth.

4. The combination, with a slotted dropwire box,expansion'springsanddents,ofdropwire brackets loosely or detachably engaged with said dents and provided with shanks which enter and fit the slot in the box, and a guard-plate or holder arranged and operating to retain the bracket in engagement with the dents and the box, as and for the purposes hereinbefore set forth.

5. The combination, with the slotted dropwirebox,expansion-springs,anddents,ofdropwire brackets loosely or detachably engaged with said dents, provided with bearing-faces which rest against the exterior of the box and each side of the slot therein.

6. The combination of a slotted drop-wire box, drop-wire brackets formed with shanks to enter and fit the slot in said box and with projections to bear upon the exterior of the box on each side of the slot, and a guard-plate or holder retaining said bracket in engagement with the box, substantially as and for the purposes hereinbefore set forth.

7. The combination, with a drop-wire box, of a series of drop-wire brackets movable t0 and from one another and projecting laterally from said box,so as to lie in a horizontal plane, or approximately so, drop-wires pivoted to said brackets and standing at about right a11- gles thereto when raised into working position, and a guard-plate overhanging and covering said brackets, substantially as and for the purposes hereinbefore set forth.

THOMAS C. ENTVVISTLE.

VTitnesses:

ALBERT M. MOORE, GERTRUDE M. DAY. 

